Seat-spring.



L. A. YOUNG.

SEAT SPRlNG. APPHCATION FILED FE B; II, 1916.

1,211,267, Patented Jan. 2, 191%.

LEONARD A. YOUNG, OF HIGHLAND PARK, MICHIGAN.

sna'r-srame.

Specification of Letters Patent.

Patented J an.2, 191 '7.

Application filed February 11, 1916. Serial No. 77,741.

To all whom it may concern:

Be it known that I, LEONARD A. YOUNG, a citizen of the United States, residing at Highland Park, county of Wayne, State of Michigan, have invented a certain new and useful Improvement in Seat-Springs; and declare the following to be a full,- clear, and exact description of the same, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

This invention relates to seat springs and has for its object a seat spring provided with central ties or braces for the supporting springs, that is to say, ties or braces which connect the helical springs from mid portion to mid portion, which ties and braces are of such a character that they form a yielding connection from one side of the seat spring to the other.

In the drawings, Figure 1 is a'horizontal sectional view of a part of the seat spring, taken on a plane just above the middle of the seat spring. Fig. 2 is an end view of the seat spring. Fig. 3 is a front view. Fig. 4 is a detail showing how the braces or ties are connected to the mid portions of the helical springs. Fig. 5 is a detail showing how the tops of the helical springs are tied together.

a designates the rim channel bar into which the lower coils of the helical springs are pinched.

6 represents the bottom supports for the helical springs, comprising channel bars which are pinched over the lower coils of the springs and located on opposite sides of the helical springs.

c designates the upper rim wire. helical springs are not braced together at their tops. They are only tied together by loose tie links so that the tops may rock to a certain extent and make the immediate supporting surface of the spring very flexible and yielding, but in order to keep the springs erect and from becoming completely distorted and entangled, itis necessary to brace the springs at their mid portion. This much of the construction is broadly old.

My improvement consists in the nature of the central ties and braces. These are short channel bars (1 which connect adjacent helical springs. Now one of the chief features of these connectorslis their location. They are made in short lengths only suflicient to The bridge the space fromvspring to spring. For instance, the first length extends from the first spring to the second spring on one side of these two springs. The second length extends from the second spring to the third sprlng on the opposite side of these two springs. The third length extends from the third spring to the fourth spring on the'firstmentioned side of the two springs, and so on, so the arrangement is a staggered one. Now this staggered arrangement of these short lengths of ties or braces is important. In the first place the employment of the short lengths breaks up the braces and ties and allows a certain independent action of the helical springs which would not otherwise be possible if -a continuous or solidbrace was used from front to back of the seat spring. In the second place, it will be noted that any helical spring which has two of these ties attached to it has the attachments on opposite sides so that the points of attachment are substantially one-half a coil apart, thereby allowing a certain amount of yield between the two attachments. In the third place, by having these braces run along opposite sides of a single helical spring and attached at the sides of the springs, the braces tend to maintain the helical springs in erect position at the sides as well as at front and rear.

Along the front and rear of the seat spring, a slightly different arrangement of the ties and braces is employed. Instead of staggering the braces and ties in the manner above alluded to, it is more convenient to have the two ends of the two braces overlap in the manner shown in Fig. 3, that is, the

attaching the'ties is to use a pair of pliers to pinch the channel bar to the coils of the helical springs and no intricate tying or wire bending is necessary.

What I claim is: v

1. In a seat spring, the combination of a plurality of supporting springs, a frame for said seat spring so that one length is on one side of two springs it connects and the next succeeding length is on the opposite side of the two springs it connects.

2. In a seat spring, the combination of a supporting frame, supporting springs carried thereby, and ties or braces for connecting the mid portions of the supporting springs and comprising short lengths of channel strips each bridging from one spring to another only, the said short lengths of channel strips being arranged in staggered relation across the seat spring when viewed in plan, that is to say, one length engaging the two springs it connects on one side of these two springs and the second length engaging the two springs it connects on the opposite side of such two springs, and arranged in zig-zag relation when viewed sidewise, that is, the alternate lengths being disposed obliquely upward and obliquely downward.

In testimony whereof I sign this specification.

LEONARD A. YOUNG. 

